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Posted at 5:10 AM ET, 01/22/2010

Roads just wet for now; still chance of snow/sleet

By Dan Stillman

* Winter Weather Advisory N&W of D.C. except Fairfax Co. (map) *
* Saturday sun, Sunday rain: Full Forecast into next week *
* Radar, temps & more: Weather Wall | Traffic | Get There *

jan-22-snowaccum.gif

Precipitation that was mostly in the form of light rain overnight across the entire region has broken up early this morning. With temperatures mainly in the mid-30s right now, even well north and west in Loudoun and Frederick counties, icing on roadways is not a concern for the time being.

Precipitation is likely to increase in coverage again later in the morning into midday, and at the same time any rain could mix with or change to sleet and/or snow from northwest to southeast as colder air moves in aloft, with the potential for light accumulations as shown on our map above. Precipitation should come to an end around early afternoon.

See our full forecast through the weekend into next week.

By Dan Stillman  | January 22, 2010; 5:10 AM ET
Categories:  Forecasts, Updates  
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Next: Forecast: Wintry mix ending in the afternoon

Comments

Gotta give CWG, and in particular, Josh, props on this "event". It was noted several times that this storm had "bust" potential and that the areas far west would be most likely to see frozen precip.

Good job.

On to Sunday...any flooding concerns, either here or in the mountains?

Posted by: ThinkSpring | January 22, 2010 7:58 AM | Report abuse

Mmmmm, DC winter weather!

Posted by: ennepe68 | January 22, 2010 9:26 AM | Report abuse

Indeed, Josh nailed this forecast so far. And you are correct that in pretty much all of our posts related to this storm, we emphasized the very high uncertainty/bust potential.

Posted by: Dan-CapitalWeatherGang | January 22, 2010 9:34 AM | Report abuse

CWG- What is up down near Warrenton and Fredricksburg? I noticed that precip is moving in from both the south and north, converging on what looks like a very heavy line extending down the Potomac. It just looks odd. Is it real? What causes this? Just curious.

Posted by: dprats21 | January 22, 2010 9:41 AM | Report abuse

Sorry, I meant just South of the Potomac. (Rappahannock River)

Posted by: dprats21 | January 22, 2010 9:47 AM | Report abuse

Morning Update: 28.8F, mixed precip continuing in Blue Ridge Mtns of N. VA

Video report here

Posted by: spgass1 | January 22, 2010 9:50 AM | Report abuse

dprats, it looks like its a convergent zone between the remnant low over kentucky, west-southwesterly flow, and the developing coastal low, north-northeasterly flow. Looks to be based somewhere between 900 and 700mb as surface flow has already been taken over by the developing coastal low.

Posted by: Brian-CapitalWeatherGang | January 22, 2010 9:56 AM | Report abuse

So warm and rainy on Sunday...but inquiring snowlovers just HAVE to know, how's it looking now for early/mid February for snow?

Posted by: manassasmissy | January 22, 2010 9:57 AM | Report abuse

Thanks, Brian. That makes perfect sense. It's kind of wild to watch it develop on the radar. I thought I was seeing things at first.

Laytonsville report: 32.7 with very, very light precip. switching from sleet to rain and back. Raised surfaces have some light icing, but roads are just fine.

Posted by: dprats21 | January 22, 2010 10:05 AM | Report abuse

The comments to this entry are closed.

 
 
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